Fluoropolymer alloys made of melt fabricatable extra-high-molecular weight fluorinated ethylene-propylene copolymer (EHMW-FEP) and one or more other polymers. In fluoropolymer alloys made of EHMW-FEP and polytetrafluoroethylene, the weight percentage of the former is 0.1-99.9% and the latter is 99.9 ...

The invention discloses a radio frequency identification (RFID)-based miner positioning system, which comprises an RFID system, wherein the RFID system is connected with a ground controller through a wireless transmission line, and comprises card readers, tags, a computer system and the like; the RF ...

Disclosed is a miner positioning system based on the wireless sensor network. Positioning nodes are in wireless connection with routing nodes, the routing nodes are in wireless connection with the access nodes, the access nodes are connected with a ground monitoring system through the Ethernet, the ...

A road tunnel distributed type illuminating system based on wind and light complementation comprises independent small wind and light hybrid generation systems arranged at the opening of each tunnel, and a supervision center; and the supervision center is mainly used for monitoring the small wind an ...

The invention discloses a preparation method of phthaloyl-L-alanyl-L-glutamine, which relates to phthaloyl-L-alanyl-L-glutamine prepared by the reaction of phthalanyl chloride and L-glutamine. The preparation method comprises the following steps: adding the L-glutamine into an alkalescent aqueous so ...

The invention discloses a method for improving propagation coefficient of Aechmea with bright leaves, and belongs to the technical field of flower seedling breeding. The method comprises the following steps of: (1) preparing a parent plant; (2) determining the type and concentration of a plant growt ...